No altered blood pressure and serum markers of oxidative stress after a long time dietary fish oil in the genetically 9 month-old type-2 diabetes Zucker rat

2010 ◽  
Vol 83 (4-6) ◽  
pp. 211-218
Author(s):  
Sompadthana Tricot ◽  
Virginie Mimouni ◽  
Sonia Rompion ◽  
Christelle Froger ◽  
Pierre Lacroix ◽  
...  
Diabetes Care ◽  
2011 ◽  
Vol 34 (9) ◽  
pp. 1946-1948 ◽  
Author(s):  
Carlo Clerici ◽  
Elisabetta Nardi ◽  
Pier Maria Battezzati ◽  
Stefania Asciutti ◽  
Danilo Castellani ◽  
...  

2007 ◽  
Vol 53 (3) ◽  
pp. 511-519 ◽  
Author(s):  
Jason HY Wu ◽  
Natalie C Ward ◽  
Adeline P Indrawan ◽  
Coral-Ann Almeida ◽  
Jonathan M Hodgson ◽  
...  

Abstract Background: Vitamin E isomers may protect against atherosclerosis. The aim of this study was to compare the effects of supplementation with either α-tocopherol (αT) or mixed tocopherols rich in γ-tocopherol (γT) on markers of oxidative stress and inflammation in patients with type 2 diabetes. Methods: In a double-blind, placebo-controlled trial, 55 patients with type 2 diabetes were randomly assigned to receive (500 mg/day) (a) αT, (b) mixed tocopherols, or (c) placebo for 6 weeks. Cellular tocopherols, plasma and urine F2-isoprostanes, erythrocyte antioxidant enzyme activities, plasma inflammatory markers, and ex vivo assessment of eicosanoid synthesis were analyzed pre- and postsupplementation. Results: Neutrophil αT and γT increased (both P <0.001) with mixed tocopherol supplementation, whereas αT (P <0.001) increased and γT decreased (P <0.005) after αT supplementation. Both αT and mixed tocopherol supplementation resulted in reduced plasma F2-isoprostanes (P <0.001 and P = 0.001, respectively) but did not affect 24-h urinary F2-isoprostanes or erythrocyte antioxidant enzyme activities. Neither αT nor mixed tocopherol supplementation affected plasma C-reactive protein, interleukin 6, tumor necrosis factor-α, or monocyte chemoattractant protein-1. Stimulated neutrophil leukotriene B4 production decreased significantly in the mixed tocopherol group (P = 0.02) but not in the αT group (P = 0.15). Conclusions: The ability of tocopherols to reduce systemic oxidative stress suggests potential benefits of vitamin E supplementation in patients with type 2 diabetes. In populations with well-controlled type 2 diabetes, supplementation with either αT or mixed tocopherols rich in γT is unlikely to confer further benefits in reducing inflammation.


2019 ◽  
Vol 49 (4) ◽  
pp. 331-342 ◽  
Author(s):  
T. Cooper Woods ◽  
Ryousuke Satou ◽  
Kayoko Miyata ◽  
Akemi Katsurada ◽  
Courtney M. Dugas ◽  
...  

Background: Hypertension and renal injury are common complications of type 2 diabetes mellitus (T2DM). Hyperglycemia stimulates renal proximal tubular angiotensinogen (AGT) expression via elevated oxidative stress contributing to the development of high blood pressure and diabetic nephropathy. The sodium glucose cotransporter 2 (SGLT2) in proximal tubules is responsible for the majority of glucose reabsorption by renal tubules. We tested the hypothesis that SGLT2 inhibition with canagliflozin (CANA) prevents intrarenal AGT augmentation and ameliorates kidney injury and hypertension in T2DM. Methods: We induced T2DM in New Zealand obese mice with a high fat diet (DM, 30% fat) with control mice receiving regular fat diet (ND, 4% fat). When DM mice exhibited > 350 mg/dL blood glucose levels, both DM- and ND-fed mice were treated with 10 mg/kg/day CANA or vehicle by oral gavage for 6 weeks. We evaluated intrarenal AGT, blood pressure, and the development of kidney injury. Results: Systolic blood pressure in DM mice (133.9 ± 2.0 mm Hg) was normalized by CANA (113.9 ± 4.0 mm Hg). CANA treatment ameliorated hyperglycemia-associated augmentation of renal AGT mRNA (148 ± 21 copies/ng RNA in DM, and 90 ± 16 copies/ng RNA in DM + CANA) and protein levels as well as elevation of urinary 8-isoprostane levels. Tubular fibrosis in DM mice (3.4 ± 0.9-fold, fibrotic score, ratio to ND) was suppressed by CANA (0.9 ± 0.3-fold). Furthermore, CANA attenuated DM associated increased macrophage infiltration and cell proliferation in kidneys of DM mice. Conclusions: CANA prevents intrarenal AGT upregulation and oxidative stress and which may mitigate high blood pressure, renal tubular fibrosis, and renal inflammation in T2DM.


2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Sahar Ajabshir ◽  
Tan Li ◽  
Fatma Huffman

Abstract Objectives Nutrition plays a critical role in systemic inflammation regulation and the risk of developing inflammatory diseases such as type 2 diabetes (T2D). The Dietary Inflammatory Index (DII) is a non-invasive comprehensive literature-derived tool that evaluates the inflammatory potential of each individual's diet. The aim of this study was to assess the relationship between DII and biomarker of inflammation (CRP), DNA/RNA oxidative stress (8OHdG), glycemic control [HbA1c, glycated albumin (GA) and insulin], and blood pressure (BP) among individuals with T2D and hypovitaminosis D. Methods Sixty-eight participants were recruited by community outreach. DII for each individual was calculated based on the values obtained from the Willett food frequency questionnaire. DII score was categorized into quartiles (Q1-Q4) ranged from −5.214 (maximally anti-inflammatory) to +3.999 (maximally pro-inflammatory). CRP, 8OHdG, HbA1c and GA were measured by enzymatic assays. Linear regression analysis was performed to test for the linear trend between DII and CRP, 8-OHdG, HbA1c, GA, insulin, and BP. Results Mean age was 54.94 ± 7.93 with 60.3% of participants being female. Participants in the DII Q4 were less likely to be female and had higher 8OHdG, HbA1c and GA levels. A significant inverse association was observed between DII Q3-Q4 and insulin level (P = 0.006 and P = 0.030, respectively). After adjusting for covariates, the model remained significant for both Q3 and Q4 (P = 0.040 and P = 0.049, respectively). There was a significant association between systolic BP and DII in Q4 (P = 0.029). However, after adjusting the model for the covariates the model lost significance. There was no statistically significant relationship between the overall DII, CRP, 8OHdG, HbA1c and GA. Conclusions A pro-inflammatory diet may be associated with increased risk of hypo-insulinemia and incidence of higher systolic BP among individuals with T2D and vitamin D deficiency/insufficiency. To our knowledge, this was the first study assessing the relationship between DII, 8-OHdG, HbA1c, GA, insulin, and SBP among individuals with type 2 diabetes and hypovitaminosis D. The results of this study may serve as a basis for future nutrition interventions to improve health status of individuals with type 2 diabetes. Funding Sources Funding for this research was provided through an NIH/NIDDK sponsored grant.


Sign in / Sign up

Export Citation Format

Share Document